Global Patent Index - EP 1013975 A1

EP 1013975 A1 2000-06-28 - SHAFT SEAL AND TURBINE USING THE SHAFT SEAL

Title (en)

SHAFT SEAL AND TURBINE USING THE SHAFT SEAL

Title (de)

WELLENDICHTUNG UND TURBINE MIT EINER SOLCHEN DICHTUNG

Title (fr)

JOINT D'ARBRE ET TURBINE UTILISANT CE JOINT

Publication

EP 1013975 A1 (EN)

Application

EP 99929800 A

Priority

  • JP 9903760 W
  • JP 19779098 A
  • JP 21163198 A
  • JP 21163298 A
  • JP 21163398 A
  • JP 21163498 A
  • JP 21163598 A
  • JP 21163698 A
  • JP 21163798 A
  • JP 32266198 A

Abstract (en)

A shaft seal excellent in wear resistance which reduces the amount of gas leakage from a high pressure aide to a low pressure side, wherein flexible thin sheets (18) are laminated in ring-shape and disposed mainly around a rotating shaft (11) of a gas turbine, the turbine comprises a casing (12), a compressor, a rotating shaft (11), rotor vanes installed on the rotating shaft (11), and stator vanes installed in the casing (12) so that they are opposed to the rotor vanes, and the shaft seal is disposed between the plurality of stator vanes and the rotating shaft (11) so that each thin sheet (18) is brought into contact with the rotating shaft (11), whereby, during the rated operation, the tips of the thin sheets (18) are floated slightly from the surface of the rotating shaft (11) by a dynamic pressure caused by the rotation of the rotating shaft (11) and, when the operation is stopped, the tips of the thin sheets touch the rotating shaft (11) again by an elastic restoring force of the thin sheets (18). <IMAGE>

IPC 1-7 (main, further and additional classification)

F16J 15/18; F01D 11/02

IPC 8 full level (invention and additional information)

F01D 11/00 (2006.01); F16J 15/32 (2006.01)

CPC (invention and additional information)

F16J 15/3288 (2013.01); F01D 11/001 (2013.01); F16J 15/3292 (2013.01); F05D 2240/56 (2013.01); Y02T 50/671 (2013.01)

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

EP 1013975 A1 20000628; EP 1013975 A4 20040526; EP 1013975 B1 20121121; CA 2303151 A1 20000120; CA 2303151 C 20040831; JP 3692300 B2 20050907; US 6343792 B1 20020205; WO 0003164 A1 20000120; WO 0003164 A8 20000608

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